多重分形在内蒙古二连盆地新乌苏地区土壤氡异常解释中应用探索
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摘要
在蒙古二连盆地中西部新乌苏地区土壤氡异常解释中,尝试应用多重分形解释,并将"多重分形方法"圈定的氡异常场晕特征与常规的"统计方法(均值加三倍方差)"所圈定的异常场晕特征进行了对比。结果表明:分形方法可以应用土壤氡测量数据的处理与解释,并能取得比常规方法较好的效果,它不仅考虑了数据的随机性,同时又考虑了数据的复杂性和不规则性;在测量数据布局合理的情况下,利用最小二乘法对"含量-频数"双对数曲线进行拟合所获取的场晕分级,能更加客观地展现出异常的受控地质要素,对成矿预测提供更直接、可靠的依据。
To attempt to explain the application of multiple fractal, and the delineation of multi-fractal method, radon anomaly field halo characteristics and conventional statistical methods,(mean plus three times of variance) were compared to the delineation of the halo anomaly features. Noted that, the fractal method can deal with the interpretation and application of soil radon measurement data, and it can get better results than the conventional method. It considers not only the randomness of the data, but also the data complexity and irregularity in the measurement data; reasonable layout under the condition of field fitting obtained on the classification of halo "content frequency" double logarithmic curve by least squares method can objectively show the controlled geological elements anomaly.The metallogenic prediction provides more direct and reliable basis.
To attempt to explain the application of multiple fractal, and the delineation of multi-fractal method, radon anomaly field halo characteristics and conventional statistical methods,(mean plus three times of variance) were compared to the delineation of the halo anomaly features. Noted that, the fractal method can deal with the interpretation and application of soil radon measurement data, and it can get better results than the conventional method. It considers not only the randomness of the data, but also the data complexity and irregularity in the measurement data; reasonable layout under the condition of field fitting obtained on the classification of halo "content frequency" double logarithmic curve by least squares method can objectively show the controlled geological elements anomaly.The metallogenic prediction provides more direct and reliable basis.
引文
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[7] 梁宏斌,吴冲龙,李林波,等.二连盆地层序地层单元统一划分及格架层序地层学[J].地球科学:中国地质大学学报,2010,35(1):97-106.LIANG H B,WU C L,LI L B,et al.Sequence stratigraphy in Erlian basin.[J] .Geoscience:Journal of China University of Geosciences,2010,35(1):97-106.(In Chinese)
[8] 聂逢君,陈安平,彭云彪,等.二连盆地古河道砂岩型铀矿[M].北京:地质出版社,2010.NIE F J,CHEN A P,PENG Y B,et al.2010.Paleochannel sandstone-type uranium deposit in Erlian basin.[M] .Beijing:geological Publishing House,2010.(In Chinese)
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